/Engine/Source/Editor/SequencerCore/Public/MVVM/Views/SOutlinerView.h
void GetVisibleItems ( [TArray](API\Runtime\Core\Containers\TArray)< [TViewModelPtr](API\Editor\SequencerCore\TViewModelPtr)< [IOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\IOutlinerExtension) >> & OutItems ) const